How to drown out the EGR valve on gasoline and diesel? When I do not care for ecology. What is Valve Erp, and is it worth it to join? How to Straighten Recycling Valve GAZ 560 Shoter

D AT to the world called John Lennon, hagging naked on the bed during the next protest action. It was much more serious about this, environmentalists who, in an attempt to give the world, at least some kind of chance for salvation forcing manufacturers to "strangle" car motors to loss of consciousness. The introduction of EGR (Exhaust Gas RecirculatiOn) should have reduced the content in the exhaust of nitrogen oxides NOX.

In general, this is the only task that the exhaust gas recirculation system solves. There are several options for the execution of this system, but the principle of operation EGR is always the same: a certain amount of exhaust gases through the valve arrives back to the engine. Such recycling reduces the combustion temperature, especially in gasoline engines. And just a high temperature - the condition for the appearance of nitrogen oxides.

No other EGR does not affect. This is a pure "ecological" chip modern motor. Unfortunately, the resource is rather limited, and the time comes when the system ceases to work as it should be (more precisely, in general ceases). And then the elimination of the entire system from the engine control becomes a good way out of the situation. For more conviction, let's say that a good EGR and so does not work on high revolutions Or in emergency mode - under such conditions, the factory program of the control unit provides its full closure.

It is not necessary to be afraid of shutdown EGR: the only unpleasant consequence will be the increased content of nitrogen oxides in the exhaust, but if there is some unknown nitrogen in the scale of the scales, and the other - the universal operation of the car, the second, of course, will translate. For ecology - ecology, and nerves are more expensive.

How and why EGR stops working?

There are several options typical breakdowns EGR. This is a valve jamming, an actuator chain break or a valve position sensor and unaccounted superstar (or leakage) of air. Inside each variant, you can also select several types of breakdowns, so we will look at each of these breakdowns separately.

The most common case is the valve jam.

We all know well that when burning fuel formed soot. Over time, its amount settling in the valve makes it difficult for its mobility. And the valve, naturally, clinical. Here are two options: either it remains in a closed version or in the open. Here as lucky, and more lucky if the valve remains in the closed position. In this case, the soot will not fall into the engine. By the way, it is sometimes practiced such a way off Egr - the valve is simply programmatically closed. Why it is ne. the best way - a little bit later.

The open position is not very primarily the fact that all burning waste is straight to the cylinders. If you look at how Egr works, you can see an interesting picture: in many modes of the engine operation, the valve is closed and does not take any participation in the operation of the motor - for example, on high speed and with high load. If we speak very roughly, then the closed position is no more natural and harm does not bring any. Unless, of course, the EGR error does not make changes to the operation of other systems that are related to recycling.

As the valve jamble is the most frequent malfunction EGR, consider what is most often the cause, and how to try to delay the valve's death.

In general, of course, it is clear that the main enemy of the valve is bad oil and unstable fuel quality. To a greater extent it relates to diesel engines, although it is largely applicable to gasoline. Although we are convinced that the quality of our gasoline and diesel fuel is quite at the European level, in fact, this is true only for large network refills, and not for everyone. The market is obviously bad fuel, both gasoline and diesel, in Russia still exists and even flourishes.

Important conditions for long life EGR - good and timely maintenance. It is clear that the scored scene filter and the oil that was the last time changed in one day with a fall of the Berlin Wall, no way contribute to the longevity of EGR. By the way, for good conditions The system may well live 150-180 thousand kilometers. True, it should initially be normal, and not so structurally flawed, as, for example, on some SsangYong.

The second common cause is the engine malfunction. There may be many options. Any reason that increases the smoke of exhaust is guaranteed to reduce the EGR resource. For example, a dirty air filter, upholstered air leakage, current nozzle or clutched piston rings. This is very important factorEspecially for those who, by virtue of their convictions, will restore the efficiency of EGR. Repair is usually the wrong one, so before engaged in the recirculation system, you need to make sure that the OIO itself is working. Otherwise, there is a chance in the very near future again to stay with the stubborn valve.

And finally, the most paradoxical cause of the valve jamming is his suicide. Yes, oddly enough, the EGR valve has a constructive tendency to suicide. Here again you will have to go deep into physics of the engine. Let's do it at all very much, just touch this process a little.

So, we will present a graph on which one axis there will be a combustion temperature of the mixture, on the other - the level of nitrogen oxides and the intensity of the particulation (the appearance of solid particles in the exhaust gases). If you draw the no curve, it will grow with increasing temperature. But the curve showing the number of solid particulates will be the opposite, fall. At a certain point they will cross.

The complexity is that the less nitrogen oxides in the exhaust, the better the ecologists, but worse than engine - More emission of particulars (particulate particles). The task of engineers is to find the maximum balanced solution: it is necessary to reduce the NOX in the exhaust gases, and do not reduce the motor resource. And yet, in any case, this decision will be compromised, and the less oxides in the exhaust, the more difficult the EGR life will be possible due to the clogging of the soot valve. This is what it turns out that this system is ruined by itself, solely only performing its work on a decrease in the NOX exhaust. From this, unfortunately, not to go anywhere.

The second error, less common, is bursting a valve circuit or valve position sensor. In this case, the error will look like a mismatch between the specified and actual valve position. However, in the first case there will be the same, so the diagnosis should be passed, and not where it fell.

And finally, the third error is unaccounted air. Here we are talking about simple leakage of the system.

Since the nature of errors in all three cases is different, then the methods of repair and partly diagnosis are also different. Of course, they also depend on the engine design. For example, often EGR errors are accompanied by air flow measurement errors, that is, air flow meter sensor errors (MAF-SENSOR). And in the old systems with vacuum control there are errors on the superior of turbines. So the diagnosis should be treated seriously.

So, let's say that we have found a malfunction, and now we want to get rid of it. How can I do that?

Solving problems with EGR

I am not a lover of marked lists, but here it will be as impossible by the way. So, to eliminate the malfunction in the following ways:

• valve replacement for new original detail;
• the use of Chinese analogues;
• removing EGR from a software disabling system;
• software closing valve.

We have already spoken about the first way. It is not the easiest and most cheap, but it is quite eligible for existence. The main thing is to remember that if the system emerged before the deadline (thousands per hundred mileage or less), then, most likely, there is some kind of problem in the motor. It must be found and eliminated, otherwise the valve replacement can be repeated in the near future, and you just throw money into the wind. More precisely, the exhaust.

We will not talk about the second way at all. Here without comment.

The cheapest and reliable is the third way. It is usually used to them when the EGR is disconnected.

So, it is necessary to divide the mechanical and software part of the work. What do you need to do with mechanics?

In general, the task is reduced to overlapping the flow through the valve. The first thing they do is put a plug. Many believe that it is easy to do it. Partly it is. But you do not have to try to put in the path of hot exhaust gases from a thin paronite or beer can. Such plugs roast very quickly, sometimes they are generally held until the first good press on the gas pedal. The plug must be made of steel, better stainless steel, and its thickness must be at least 2.5-3 mm.

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If in order to brew the valve or dismantle it and deliver the diffuser usually there are no difficulties, the dismantling of the valve with the cooler can be complex. If the valve has its own cooler, then the suppressive and removing nozzles of EGR simply put the plugs. So, for example, they come in the case of working with the Motors of the BMW M-series. But, for example, at Volkswagen motors or BMW Series N autonomous contour No, here the cooling system has to "ring".

If with mechanical part Works in most services do still cope, then with the program part of the error there are regularly. So what should be done with the software?

First, it is forbidden to open the valve. It seems that everything seems to be clear if the programmer knows how to find the appropriate EGR cards in the firmware, but then everything can be much more complicated: it is necessary to exclude errors on the EGR system, that is, completely remove it from the program.

Here, some programmers are strongly removing and removed everything that comes at hand. Often, their intervention affects the entire diagnostic system, after which the elimination of the consequences becomes a long and complex process. And, as a rule, expensive (time is money, it is obvious).

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In addition, you should disable the emergency mode in which the non-working EGR sends. And finally, on some cars you need to recaller cards by air (air flow via MAF), if the software does not automatically do it. Sometimes they also forget about it, and the ECU goes crazy, trying to understand what air came from where there is so much oxygen in it, and what to do with this incomprehensible mixture.

And now the last way is to programmatically give the command to closing the EGR valve. This method can not be used. For example, it is justified when physical access to EGR is difficult due to constructive features car. And it is completely impossible if the valve has already jammed: the program does not shift such a valve. Here the output one is to disassemble and do everything in human.

The reliability of this method is not always absolute. First of all, due to the fact that it is not always possible to ensure that the valve is blocked completely. This can lead to sage and other combustion waste in cylinders and to an unrecorded amount of air entering through a loose valve. Therefore, it is still preferable to join the EGR completely: simultaneously mechanically and programmatically.

To be or not to be?

The last question remains: when should I go to the service for removing EGR? Suppose we could convince you that nothing terrible will occur if it gets rid of this capricious system. When is it better to do it?

I have already spoke about the valve resource: thousands of up to 150 kilometers with good, it is not necessary to worry. If you look at the statistics, then on diesel machines Due to the failure of the EGR accounts for about 80% of the service appeals, and only 20% on gasoline. What is logical, for soot in diesel more.

In any case, it will be necessary to follow the state of the motor. Timely replacement Oils, filters, high-quality fuel are a prerequisite. But over time, something will start wear out. And if the nozzle can be repaired or replaced (although most modern diesel engines are also quite expensive), then change the rings without explicit signs of motor wear only for the sake of EGR work, probably not quite reasonable. Especially since the resource of the cylindrophneum group is still greater than the EGR valve, which will be edged regularly even with a small and far from critical wear of the CPG. It is necessary to make a disappointing conclusion: the restoration of the efficiency of EGR is often economically unjustified and almost useless.

At the same time, it is not necessary to forget that in the burning light "Check Engine" and the care of the "accident" is not always to blame the system of recycling. The cause of these sad phenomena will establish only diagnostics - in the same way as the causes of increased smoke, poor dynamics and increased fuel consumption.

During the operation of the diesel engine with the EGR system, especially after the run in several tens of thousand kilometers, the owners often complain about the reduction of power power aggregate And the smoke of the diesel engine. Among the lovers of tuning also there is an opinion that the system of recycling the exhaust gases "stifles" engine, not allowing the power unit to fully realize the return of power. For this reason, many drivers decide to drown out the EGR valve.

In other words, the plug of the EGR valve actually represents the disconnection of the exhaust gas recirculation system, which makes it possible to exclude possible problems with this solution and add the power engine. Next, we will consider in detail why the exhaust gas recirculation system is devoured, as well as where to drown out the USR valve on the diesel engine and how to do it correctly.

Why fuse valve EGR

Let's start with the fact that the EGR system is installed on a diesel engine for compliance with the ICA with rigid environmental standards and standards that operate in developed countries. EGR is mainly designed to reduce the level of nitrogen oxides in the exhaust engine gases.

The system performs partial redirection of the exhaust gases back into the intake manifold, due to which the amount of oxygen in the fuel and air mixture decreases, the formation of nitrogen oxides becomes less intense and exhaust toxicity is stacked in the specified norms.

The EGR system valve opens at the right time, due to which a part of the total exhaust gases falls back into the inlet to feed into the engine cylinders. As practice shows, the exhaust gas recycling valve is often clogged during operation. The need to jerve arises due to the fact that soot and other exhaust components quickly remove the specified element, the scored system prevents the supply of clean air to the maximum efficient combustion of diesel fuel.

On high-quality European dielair, the Cleaning of the EGR valve may be required once in 40 or even 60 thousand km. Riding on the domestic dizetopliva makes it makes the specified procedure every 20-30 thousand km.

Moreover, the relevance of the engine equipment such a system is raised by many specialists in doubt. The disconnection of the USR naturally leads to the fact that an increase in the level of emissions of nitrogen oxides occurs. In parallel with this, the emissions of soot, carbon dioxide and carbon monoxide are noticeably reduced. Also, after disconnecting the EGR system, a decrease in fuel consumption is reduced, since the amount of oxygen in the inlet increases and the mixture combines the cylinders more efficiently.

In other words, the benefits of the work of such an exhaust recycling system is questionable. Environmental indicators are improved slightly compared to engine power loss, increased fuel consumption and costs service maintenance EGR.

There are also separate allegations that the rapid pollution of the EPR valve and the exhaust supply to the inlet leads to enhanced Nagar formation and coke of the combustion chamber. The malfunctions of the EGR system, which are often associated with the incorrect work of the USR valve, lead to unstable engine operation and increased flow Fuel. The engine comes in the engine and the resin, the process of accelerated oxidation of diesel motor oilthat strongly affects the common engine life of the diesel engine.

The need to disable the EGR system often occurs on runs about 80-120 thousand k.m. The fact is that after such a run, the engine is slightly wearing. The spent gases that are redirected to the inlet have a higher degree of contamination. Next, they are mixed with crankcase gases, and the result becomes the appearance of a powerful layer of resinous sediments in the intake manifold, on the valve of the USR, as well as on the valves of the engine itself.

The throughput in the inlet is clogged with sediments, the diesel engine gradually loses its power. The cracked valve of EPR leads to errors, the car may unexpectedly go into emergency mode. It is quite obvious that in such a situation, the urgent repair of the exhaust gas recirculation system is necessary, or its shutdown by stitching the ruble valve.

How to drown a valve EGR do it yourself

To begin with, the correct shutdown of the exhaust gas recirculation system suggests:

• mechanical flap of the valve;
• software shutdown in the control unit;

At the initial stage, the installation of the mechanical plug of the valve EGR is made. Next, disabling the EGR system is carried out using electronic equipment. It is necessary to add that only on some models it happens enough to drown out the EGR valve physically. Often, after the mechanical disconnection procedure, the program shutdown of the EGR valve is required in the control unit. Otherwise, the computer will fix the error in the operation of the exhaust gas recirculation system, the "Check" is displayed on the instrument panel, the engine switches to emergency mode with the limitation of the output power.

The most simplified version of the installation of the plug of the EPR valve in general terms suggests:

1. Removal of the valve. The specified element is most often in the field of the intake manifold and is attached to several bolts.
2. If necessary, additionally remove the intake manifold and clean the intake manifold channels from contamination.
3. Next, it is necessary to extract the gasket, which is located in the fastening of the valve EGR.
4. After removing the gasket plays the role of the template for which you need to cut out of the steel sheet similar in shape, but completely deaf plug. Only holes under the mounting bolts will be present in the plug.

   Please note the plug in the process of work will be in contact with hot exhaust gases under pressure. For this reason, it is necessary to make the gasket of the EGR appropriate thickness to eliminate the likelihood of its rapid defense. We add that the US-Valve's finished plug is also found in free sale. To order a solution suitable for a specific model, you can use the search on specialized car forums.

5. The next step becomes the reverse installation of the valve of the USR. In the place of the attachment combines a regular gasket and a new plug. With the subsequent tightening of the bolts, expect caution, as they can be quite fragile.
6. At the end, it is necessary to implement the disconnection of vacuum hoses, since in the opening of the valve by means of a vacuum system there is no longer any need.
7. The final stage of the coherence procedure of the recirculation system becomes adjustable to the firmware of the engine control unit, to programmatically disable EGR error.

The only drawback removal EMR You can consider an increase in the toxicity of the exhaust gases. Pluses much more. After the IRR valve plug on the diesel engine, the owners mark the sharpest response to the pressing of the gas pedal in modes of moderate loads, the so-called turboyam effect becomes less noticeable on turbodiesels. During operation under load, the engine smaller smokes, the service life of the particulate filter increases, the intervals between its cleaning are increasing. The service life of the engine oil is also extended, the engine is better cleaned, less prone to coking and wear.

It should be noted that although a noticeable increase in the power of the diesel engine after disconnecting the EGR system does not occur, the motor becomes more responsive, and the car itself provides more speakers when driving.

Finally, add that if it is decided to make a power chip tuning of a diesel engine or install a tuning box to a diesel engine, then the disconnection of the exhaust gas recirculation system is an extremely recommended procedure.

Krutimotor.ru.

How to drown out the EGR valve

Europeans are very concerned about environmental protection. To reduce the formation of nitrogen oxides in internal combustion engines, the exhaust gas recycling system is used.

An important element This system is the EGR valve. It redirects part of the exhaust in the intake manifold, dilutes fuel mixture exhaust gases. As a result, the temperature in the cylinder falls, the formation of harmful oxides is reduced.

Many car owners strongly doubt the benefits of the exhaust gas recycling system, which, moreover, greatly complicates the diagnostic procedure. But to work the muffler, or rather the whole exhaust system Installing the valve plug, the USR does not affect. It also makes it possible that a bunch of extra details in the car is necessary for manufacturers only to increase the cost iron horse And drivers put a plug on the EGR valve without any problems.

When you want to drown out the EGR valve

The EGR valve is devoured in two cases:

To increase the power of the unit;

When EGR breaks, when the computer issues an error, and nothing to replace.

How to put a plug on the EGR valve?

The easiest and fastest way is to install the EGR valve plug. To do this, unscrew the fastening bolts and remove the valve. Further, in the form and sizes of fastening, the USR needs to cut the plug. Best of all thick stainless steel, in the absence of a tin plate. No need to forget that the exhaust temperature is quite high, the plate will be in hot conditions.

The hose suitable to the EGR valve is better to drown out the bolt of the corresponding diameter. Cutting plates Install instead of a valve EGR, laying the pucks under the bolts. The plug must be placed on silicone sealant, and the bolts will have to shorten, since the thickness of the EGR valve body is greater than the thickness of the plate.

After this procedure that occupies no more than half an hour, the computer should not give an error. But if the "brain" was dedicated, you will have to reprogram the BC. For each model of the car - its nuances for installing the EGR plug.

Video on the topic

Good luck and at least breakdowns!

shokavto.ru.

Why and how can you drown a valve EGR on the diesel, whether it is worth doing

To reduce the number of emissions of nitrogen oxides and slightly reduce fuel consumption, many models of recent years have become equipped with the EGR system. It returns some exhaust gases back to the combustion chamber and makes the operation of a diesel engine more "soft." In practice, many motorists faced violations of the exhaust gas recycling system. Since the repair is quite expensive, many simply make the valve plug and cost without the USR.

The main part of the entire system is the valve. It regulates the amount of exhaust gases that are reused during fuel combustion. The valve can be controlled by:

1. Electronics - position sensor transmits a signal to the controller.
2. Electropneumatics - control is carried out by measuring pressure on the collector and air temperature on the inlet.

During the engine operation at idle, the valve opens by 50%. With an increase in the load, it begins to gradually close. This ensures the necessary engine power. The valve is also closed during the warm-up of a diesel engine, as long as the temperature of the power unit does not rise to the required value.

EGR valves can be vacuum and digital, their function is to regulate the number of gases, which is supplied to the combustion chamber

The USR system is designed for high quality fuel. Refueling on our gas stations, you should not count on stable work Valves and sensors.

We ask the question, why make a plug and whether it will not lead to deplorable consequences, it is worth considering a bit of theory. If the recycling system is incorrect operation, it is necessary to replace not only the valve, but also to clean other parts. Such a repair is expensive and will be required again after a certain time. From bad fuel is formed by taxes from the residues of combustion products. If the car is exploited quite intensively, after a few months after repair, failures will be noticeable. In addition to poor-quality fuels, the functionality can disturb:

As we can see, the EGR system is very good and often fails on diesel engines. On most models, it is only responsible for the amount of harmful emissions and does not affect technical specifications car. A competent plug will allow you to forget about problems with the ruble valve and even a little improve the efficiency of the power unit. But before the start of this work, it is still worth consulting in the car service and find out the features of the plug for your car model.

How can you drown with your own hands

Depending on the design of the EGR system, the valve can be done in several different ways. We need from the tools:

• cross and flat screwdriver;
• a set of keys;
• a sheet of stainless steel for dampers;
• solvent;
• insulating tape;
• rag.

Depending on the method of stitching, the work may take you different amounts of time, from 20 minutes to 2-3 hours. It also affects electronics and software controls that are used by car.

Disconnection of the system by removing the chips from the valve EGR

On some models, the recirculation system is turned off after the removal of the chip from the valve. She is near fuel filterwhich is located on the right side of the engine.

EDR valve chip is on the right side of the engine

To remove the chips, it is enough to open a latch that fixes the item.

To remove the valve chips just just open the latch

After turning off the valve must be in the closed position.

Sometimes after removing the chips, an error 481 may appear on the control panel. In this case, it is worth choosing another method of the plug.

Installation of stainless steel gaskets and plugs

To prevent the flow of exhaust gases back into the combustion chamber, you can use special dampers. They are made from a sheet of stainless steel with a thickness of 1 mm.

Thus, metal plates will completely block the movement of gases inside the nozzle.

Blocking connectors on the valve ERC

Here we will need a resistor of 1 com on 2 W, it will block the connector on the valve.

These are the most simple ways to drown out the USR valve. In some cases, more serious disassembly may be required, changing the position of vacuum tubes or disassembly. In such a work there are many nuances and when improper connection may occur serious problems With diesel.

Video of the jar of 1.5 DCI

Positive and negative sides

The main shortcomings of the EGR system specialists are called:

1. Loss of engine efficiency.
2. Increasing the number of solid parts due to reuse of exhaust gases.
3. Finding into the combustion chamber resin and abrasive, which over time does badly affect the operation of a diesel engine.

At the same time, the main function of the USR is to reduce the total number of harmful emissions into the atmosphere. Unfortunately, due to the rapid output of the system due to the contamination of the valve and sensors, it cannot work efficiently for a long time. Most mechanics are recommended to jerge. But it is worth notifying that it is in a closed position. Otherwise, with the USB disabled, most of the gases will return to the inlet, which will lead to unstable diesel operation.

To improve the operation of a diesel engine and not spend money on repairing the EGR system at each breakdown, we recommend making the valve plug. In most models, this can be implemented independently, saving at the service center services. Before starting work, you need to make sure that the jurisdiction will not lead to the malfunction in the engine.

motorLtd.ru.

Is it possible to drown out the USR valve on the diesel and how to do it

Exhaust Gas Recirculation (or EGR) performs an environmental function. This system is the norm for modern carwhich collected many programs. It is used to recycle exhaust gases in the engine. At the same time, the system clogs the intake manifold and intake valves, which negatively affects the machine itself. The presence of advantages and minuses of this system share owners for two sides, those who are important ecology, and those who are not indifferent to the fate of the car.

Causes of shutdown valve

Do I need to join the ruble valve? Experts respond if the engine mileage exceeds 100 thousand km - it is worth disconnecting.

Many inexperienced motorists do not know why the Err valve is swinging. In its work, the engine converts gases into nitrogen oxide. It is these modern environmentalists consider nature the enemy. Disconnection of the EGR valve, in their opinion, is not always effective for the engine operation. A contaminated system may apply even greater damage to the engine. A malfunction leads to a decrease in engine power and increase fuel consumption.

How to turn off the valve

Not wanting to spend time and money, many drivers make a decision to apply an independent mechanical disconnection of the USR, the consequences of which can be unpredictable. From the assembly of an electronic system to small breakdowns. You can familiarize yourself with the right technique, how to drown out the EGR valve on video, where experts are in detail and in step-by-step form explain what and how to do.

However, this does not guarantee a positive result in your case. Any specialist recommends contacting the service where the EGR valve is shutdown and mechanically.

Pros and cons of removal of USR

In the system of the engine under the influence of high temperature, nitrogen oxide is formed. It will allocate in large quantities after the system is turned off. Therefore, the IRR valve plug is definitely minus for ecology. The removal of the system will lead to the purity of the engine and increasing its dynamic indicators, which is the unconditional plus for the car.

Should I drown the USR? Or leave? Now we will understand this. And then each every time thinks before drowning the USR.

The recycling system of exhaust gases, as it causes, among the car owners, so many delusions that is a little in itself.

According to my subjective observations, on the question: What is EGR? - Only interest 10-15 will give an adequate answer. The rest believe that the USR is the removal of exhaust gases back into the engine so that they exhausted there and do not spoil the environment or, in general, confuse this system with

Therefore, most are immediately trying to drown out the USR! But how, of course, it is necessary to join - after all, he stuck and he drove away, and he, in general, long ago stuck. And I have not stopped yet! It is necessary to faster to drown the USR - the engine is already a lot of oxygen gets, and my some exhaust gases will deteriorate

And this trend is growing like a snowball. The more drove the USR, the more becomes the wishing to become parrots and finalize their cars in the example of the rest, and then at the factory stupid engineers were and could not think that the EGR was choking and kills the engine. Moreover, Nobody pays attention to the problems that arose from some after the plug. After all, initially the goal was not to understand the system, namely to drown it.

I look at some - from all the cracks oil runs, the engine is no longer visible due to the layer of dirt, the sensors do not find the sensors, and he is unheated, so that the engine "easier" was

Still need air filter zero resistance Put, and better, in general, throw it out - I can catch up with the air to the cylinders that horses are twenty, and even thirty will add! After all, they also do not put them on the racing machines and they are like a rod on the highway. Such a budget tuning.

Everyone wants to hear what he wants to hear. Therefore, who is an ardent fan of getting rid of all "superfluous", I will say you - the EDR valve is unhappy, because it does almost everything, it means that it is necessary.

EGR system (EGR)

As we all know - the EDC system (Exhaust Gas Recirculation) is used to reduce emissions harmful substances in the atmosphere, in particular, nitrogen oxides (NOX).

Help: Nitrogen oxides are harmful and dangerous for the human body. For example, NO is considered a strong poison that affects the central nervous system, can lead to a damage to blood due to the binding of hemoglobin. NO2 also exhibits high toxicity, can provoke irritation of respiratory organs. Of the known nitrogen and oxygen compounds, the oxide and nitrogen dioxide, which are formed during the combustion of the fuel in industry and in transport are most dangerous as the atmosphere pollutants. Connecting with water vapor, they form nitrogen and nitric acids. The latter make up a third of the components of the "acid rain". At high concentrations of nitrogen oxides in the atmosphere, poisoning is possible, accompanied by edema of the lungs, the ulceration of mucous membranes, headaches.

But the EGR system does not burn them, as many people think, and does not give this nasty to form initially.

How does the EGR system work

Let's not go into chemical processes, as this is not the purpose of the article. And consider this thing in general terms.

The thing is that air is a mixture of gases, including oxygen with nitrogen. At high temperatures, oxygen and nitrogen reacts and this ominous NOX is obtained. It follows from this that if in the combustion chamber to reduce the temperature to a certain level, then the formation of NOX will be minimal.

Reduce the temperature in the combustion chamber in several ways is possible:

• Cooling the fuel-air mixture before feeding to cylinders - many nuances
• Reduce compression ratio - engine power is lost
• Use a richest mixture - the fuel consumption increases and the release of other harmful substances increases
• Reduce the combustion temperature - what you need

Here is last Path And most of the manufacturers go, since it is less costly and serves no one decade. But how to reduce the temperature of the burning? Everything is simple to banality. From school lessons, we remember that oxygen supports burning and what it is more, the stronger, in fact, this is burning. All saw gas welder - he has gas in one cylinder, and in another oxygen under pressure. Metal gas itself does not melt, but when it supplies a lot of oxygen from the cylinder at the same time, the metal melts like oil.

So it is necessary on certain modes of the engine operation to be supplied to the cylinders slightly less than oxygen with the same amount of the total supplied air volume. But where to get the air without oxygen? Of course in the exhaust gases, because it has already burned down there. Here and comes to the rescue system of the USR. It adds the right amount of "air without oxygen" at the moment when it is necessary.

Many will say that for more efficiency engine and reduce fuel consumption is needed, on the contrary, more oxygen! All right! Let's figure out.

As already mentioned, when the temperature in the combustion chamber becomes very high, nitrogen and oxygen begin to interact, and nitrogen oxide is formed. In the gasoline engine for fuel combustion, oxygen is needed, and since it is not in sufficient quantity due to the already formed nitrogen oxides, the fuel does not completely burn, which does not contribute to an increase in the engine power, but on the contrary, reduces it. Also increases fuel consumption and emissions of harmful substances in our atmosphere with you.

It turns out such a collision - we reduce the amount of oxygen so that it becomes more

Once again - reduce the amount of oxygen to reduce the temperature in the combustion chamber so that the remaining oxygen does not enter into a reaction with nitrogen, and supported the burning of fuel.

But even if you do not pay attention to the foregoing, then this system has other equally important useful functions.

From my point of view, the main merit of this system is a decrease in the edge zone of detonation. Detonation is the most important enemy of internal combustion engines, so the engine management system intently monitors this phenomenon with the detonation sensor. And in the case of its discovery, the ECU instantly makes adjustments to the ignition advance angle and the composition of the air mixture. These adjustments are designed to avoid detonation to the detriment of the dynamics of cars and economy!

You noticed that the car goes better to cool weather, and in the heat stupid? I think yes.

This is caused by two reasons. First, the cold air is more dense and, accordingly, more than the mixture can be caught in cylinders. Secondly, this mixture is colder than in hot weather and therefore it is possible to increase the ignition advance angle without the occurrence of detonation, since detonation appears in an overheated combustion chamber. That is, the higher the temperature in the combustion chamber, the greater the chance of detonation. And the EGR system, as we understood, is just needed to reduce the combustion temperature.

Also, the EGR system reduces fuel consumption, increases the efficiency of the gasoline engine, reduces the "sharpness" of the diesel engine and prevents overheating of the cylinder and the valve squeak.

You can say simple language - the EGR system allows not to squeeze all the "juices" from the engine in exchange for the long-term resource of the engine!

I will give an example from life.

As you know, the EDR system was invented today and not yesterday. She was patented in 1932 in Germany, when ecology has not yet been worried about ecology. What does it say? That this system lives unified ecology.

So, very long ago, my friend was our domestic "Niva" - VAZ 21213. And it was the system of recycling exhaust gases. At that time, this system was even more underestimated and, with the question: "Why is it needed?" - safely got rid of her.

After that, problems began. "For some reason" detonation began to overlook almost all modes of engine operation. From her, they tried to get rid of the installation by the installation of later yaz, but this step inevitably led to the loss of dynamics, "stupidity" of auto and overruns of fuel.

So continued until I put the owner of Niva on the path of True and did not offer to return the recirculation system to his legal place.

So it was a simple typewriter with a morally obsolete engine and without software system Control.

And what will happen to your car after the plug of the USR? I also do not know, but you might think.

Should I drown the USR?

No, well, it is clear that dubious purity in the collector will warm the soul. And if even ventilation carter gases Disable, then all will be glittered in the collector. Moreover, it will be shine even more than those who have only disabled!

Well, okay.

It is known that the EGR system is included in the work in partial loads mode, lowers the combustion temperature, which reduces the detonation threshold, and this, in turn, makes it possible to use earlier ignition.

I analyzed a lot of diagnostic graphics different machines. Including Chevrolet Lacetti. And revealed two patterns:

1. Cars that have no system of EGR from the plant (and disabled programmatically) work with later UAn in general
2. When opening the valve, the USR - Wozuz increases. Or vice versa - with an increase in Women - the USR valve opens.

Here is an example. The opening schedule of the EGR valve visually constantly repeats the chart of the ignition advance angle. The yaz is up and an extent valve control signal is also up, the uzew down and the extent signal is also down. And the voltage of the detonation sensor at the same time remains the same.

The consequences of the jar

From this we can conclude that the EGR system plays the last role in the engine's robot. This is a whole algorithm of actions that makes the ECU to ensure the correct engine work. Each parameter clings after another and forms a chain of the necessary processes. Therefore, the removal of one link in this chain can destroy the entire algorithm and lead to bad consequences. Maybe it will not immediately be noticeable, and then, after a few thousand km, when you already forget that once intervened in the system's work.

Many put plugs to the EGR valve, but at the same time they do not think about the fact that the ECU continues to open the valve, as before. But the gases do not pass, but does not see the ECU ...

Therefore, in some cases, satisfied car owners do not even suspect that together with the plug, they drove long-term fuel corrections far in plus ... After all, instead of reducing the amount of oxygen when the valve is opened, we supply as much oxygen as the valve closed. I told about it in the video at the end of this post.

But who needs it - the main thing is that the error does not pop up.

Also, I can not understand the expressions - "After the silence of the USR-idle move became even." It is not true, since the USER is at idle does not work.

Or such - "Mooked up the USR - and the car stopped twitching." And before he did not twitch with the same valve? Just in these cases, the system is faulty or requires cleaning!

But, again, who needs it? It is easier to drown and repair is over ...

This can be compared with - easier the pads to remove the wheel normally spinning, and not. So what? I saw such - the lubricants smeared the lubricant so as not to the vulley very well even on the Internet did not boast, and the next day the floor would smell the blocks than God sent.

If sooting you hinders more than the correct engine job, then remove the USR valve not only physically, but also programmatically. And get ready to change the oil more often, as nitrogen oxides in gases, breaking into the engine crankcase worsen the properties of engine oil.

By the way, if a lot of nagar appears from the recycling system, then it is necessary not to jerger, but the engine is normal! This is as an indicator that in the cylinders is burning not only the air mixture, but also a lot of oil.

And if you decide to think about nature and are not going to interfere with the engine work, then spend regular cleaning system and it will not cause you problems.

The serviceable EGR system helps the engine, and faulty - interferes!

Cleaning Valve Erg.

Personally, in cleaning the System, the USR well helps the funds against Nagar, which I wage the spouse in the kitchen

There is nothing difficult there. Machine the valve and, for example, with a toothbrush we clean the nagar. The main thing is to not allow detergents to enter the valve position sensor. It is at the top of the valve under the lid. Therefore, the valve is desirable not to turn the valve.

Output.

In general, the essence of all this scribb can be accommodated in several offers. It is possible to join the EGR system. There is nothing criminal in it and no one will judge you for it. But it is not worth it to tell on every corner that the EDR system is guilty in all car sins and all the problems from the USR. In addition to Nagara, this system does not bring any harm. And if you have a miraculous car with a heap of problems after the jurisdiction of this system, then the reason was not in the USR, but in the malfunction to the USG! Because no one has served the system and it is naturally tired. And everything gets tired in the car and everything requires regular service.

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Considered the device of the EGR valve, as it works, led examples of faults and causes them. And today we will pay close attention directly to the valve shutting down, why the owners go to this and most importantly, how to disconnect the EGR valve with their own hands.

Valve EGR L6735 Chevrolet Lacetti

WHY DESHOOL UNDER THE VALVE EGR?

We already know that in principle, the USR system is intended to recycle the exhaust gases, back to inlet system For mixing with gasoline or diesel. Due to recycling, the amount of clean air is reduced, respectively, the formation of various nitrogen oxides is also reduced, compared to the one if only pure oxygen was used.

The main element in this system is the EGR valve, which is responsible for opening the "path" for spent gases at a certain point, sending them to the intake manifold. Thus, the proportion of oxygen is reduced, and the combustion temperature is also reduced. Must understand the root causes of the emergence of the system, this is a reduction in emissions, and they are just the greatest influence at high combustion temperatures. Therefore, the circulation of exhaust gases allows to reduce emissions by reducing the combustion temperature.

Thus, a portion of the total share of spent gases is transmitted through the valve back to the motor (usually the system is tuned to turnover, after 2,000 valve opens and allowed exhaust gases), reducing emissions into the atmosphere. But, you yourself understand that the exhaust gases are "dirty", and passing through the valve, they score it, which means periodically the need for its cleaning. The scored valve disrupts the mixing process, that is, it prevents the supply of clean air and even the exhaust gases in the desired quantities do not miss. Why the mixture is too rich, more fuel is supplied than usual. The engine is clogged by Nagar, the EGR valve itself is covered by Nagar, the film appears on the cylinders from the unburned mixture, the appearance of the rapid wear of the piston group.

Yes, and most importantly, after disconnecting the USE, fuel consumption is reduced. When disabling the USR, the fuel mixture is formed better, without waste impurities, the amount of oxygen increases, why the fuel mixture burns in the cylinders more efficiently, not leaving the car.

And besides, recently began to say openly that as a valve is almost zero. If the valve is reduced during the valve, the emission of nitrogen into the atmosphere is reduced, then when it is disconnected, the emission of soot, carbon dioxide and carbon monoxide is reduced.

Plus, the DVS workflows are observed during the contaminated valve, it is reduced by power. As you can see, real reasons disable this system much more.

That is, it is possible to highlight the following group of reasons, in what cases should be swashed by the Valve EGR:

Pollution valve, no desire to clean it or buy a new one.

Problems with sensors on which the mixing process depends.

Fast wear of the cylinder-piston group.

Increased fuel consumption.

Reducing the power of the engine.

Work in engine.

It is worth noting that all these reasons in most cases appear after the valve fails or contaminated. And his diagnosis, replacement, repair, cleaning is a fairly expensive event, so the most attractive domestic drivers see the banal blocking of the operation of this system in whole or in part.

How to disconnect the ruble valve?

First you need to understand that in addition to the mechanical part of the USR system, there is also an electronic, which sends indicators on the ECU, affecting the formation of the fuel mixture. Accordingly, to properly disconnect the valve, you need to use:

Electronic joining.

Mechanical intervention.

But, not always the owners apply, both options. Nightly, on the contrary, in the process of stitching, resort to the least costly and complex, namely mechanical blocking. So, options for disconnecting valve EGR:

1. The worst thing is that every driver can do, just "throw off" the chip from the valve. But, there is a flaw, almost all machines after such manipulations are constantly burning "Check". It does not throw it so simple, so in the case of a truly malfunction, the driver is unlikely to know about it in advance. Not very the best way Disable.

2. Replacing the valve gasket. At the place of attachment of the valve in the intake manifold, it is a gasket with an inlet holes, etc. What do you need to do? On the template, cut the same gasket, completely "deaf" without any holes. Naturally, do not forget about the mount.

Material can be used any, aluminum, brass, stainless steel. But, having the form that the effect of exposure will always be large, so it is better to pick up the corresponding thickness immediately so that the gasket served longer.

Mounted valve plug

In some cars and the plug causes errors in the ECU, accordingly will burn "". Remember this.

3. Many car owners do in general on "Barbarian", in the channel, where the EGR valve is shifting, twists the usual bolt with the necessary thread, the thread is even cut into the need.

4. Installing the plug not only after the valve, but also to it. Since, installing metal plates, removing the chip, all the same exhaust gases will fall on the valve, pollute it and break it work in the economy. To get rid of it, you need to overlap the channel gain of the exhaust gases from the exhaust manifold, in the intake. There are usually simple hoses swirling on the nut along the type of water supply. On many machines, instead of fastening the hose to the valve, either a coin or metal circle in shape and sizes. Thus, overlapping the flow of gases from the exhaust manifold.

5. The most effective and effective method, It turns on the program shutdown of the EGR valve through the ECU. In this case, the "Check" will not light up due to the circulation violation. In all listed cases, "Check" unambiguously "popped out". But, with amending "Brains" you can solve this problem. But, you need to have experience, knowledge, equipment that it turns out not in each service.

Software is implied to remove the firmware of the EGR valve from the computer. That is, using a computer and a special program for this. As a rule, on large hundred there are craftsmen specializing in this topic. Disconnecting the valve programmatically, there is no need for mechanical joing. Many after that even chips do not disconnect and drive with the valve. After all, by and large, "brains" no longer give commands to open / close the valve and the need to dismantle it. But others advise in a pair to do and physically joining, one of the methods listed above.

Conclusion

In the end, I would like to emphasize that in our country so far without consequences can be disabled this valve. Much more harm is made by large production, so your own conscience can be reassured. Especially disabling this system, it allows not to simply reduce the flow, increase the power of the motor, but also to increase the resource not only in the internal engine itself, but also the various sensors that depend on it.

Disconnection options Mass, the main thing is to understand that in mechanical intervention, the electronics will not be disabled, which is why the burning constantly "check" will cause inconvenience. Actually effective way to disable this system completely, make changes to "brains", the main thing is to find a good wizard.

The main detail of the exhaust gas recirculation system (Exhaust Gas Recirculation). The task of the USR Consisting of reducing the level of formation of nitrogen oxideswhich are the product of the engine operation. In order to reduce the temperature, some of the exhaust gases are sent back to the engine. The valves are installed both on gasoline and diesel engines, except those that have a turbine.

From the point of view of ecology, the system performs a positive function, limiting the production of harmful substances. However, the work of the USR is the source of numerous problems for motorists. The fact is that the EGR valve, as well as the intake manifold and working sensors in the process of operation of the system are covered by Nagar, which is the cause unstable work Engine. Therefore, many car owners resort to cleaning or repair, but to the joy of the whole system.

Where is the EGR valve

The device mentioned directly on the engine of your car. IN various models Performance and location can be different, however, you need focus on the location of the intake manifold. Usually there is a pipe. Also, the valve can be installed on the intake manifold, in the suction path or on the throttle block. For instance:

EGR valve on Ford Transit VI (diesel) is in front of the engine, to the right of the oil probe

EGR valve on Chevrolet Lacetti is visible immediately when opening the hood, it is located behind the ignition module

EGR valve on Opel Astra G is under the upper right corner of the engine protective cover

A few more examples:

EGR valve on BMW E38

EGR valve on Ford Focus

EGR valve on Opel Omega

What is the EGR valve and the types of its designs

Through the ECR valve in the intake manifold, a number of exhaust gases is sent. Next, they are mixed with air and fuel, after which they enter the engine cylinders along with the fuel mixture. The amount of gases is determined by the computer program laid in the ECU. Information for making a computer solutions give sensors. This is usually a cooling fluid temperature sensor, sensor absolute pressure, air flow meter, position sensor throttle valve, Air temperature sensor on the intake manifold and others.

EGR system and valve work not constantly. So, they are not used at:

• idling (on a heated engine);
• cold engine;
• fully open valve.

The first used aggregates were pneumomechanicalThat is, managed using the permission of the intake manifold. However, over time they became electropneumaticand (EURO 2 and EURO 3 standards) and completely electronic (EURO 4 and EURO 5 standards).

Types of valve EGR

If you have installed in your car electronic system EGR, then it is managed using the ECU. Digital valves Egrr. There are two species - With three or two holes. They open and closed with the help of working solenoids. The machine with three holes has seven recycling levels, a device with two - three levels. The most perfect valve is one, the opening level of which is performed using a stepper electric motor. It provides smooth gas flow regulation. Some modern EGR systems are equipped with their own gas cooling installation. They allow to reduce the level of spent nitrogen oxide even more.

The main causes of the system malfunction and their consequences

Egrr valve depressurization - The most common malfunction of the EGR system. As a result, incontrolled in the intake manifold occurs. If your car has an engine C, it threatens the decay of the fuel mixture. And when the car has an airflow pressure sensor - the fuel mixture will be re-entered, due to which the pressure on the intake manifold will increase. If the engine has both mentioned sensors, then at idle it will get too enriched fuel mixture, and with other modes of operation - depleted.

Valve pollution - The second frequent problem. What to do with it and how to clean me with you below. Please note that the slightest malfunction in the operation of the engine theoretically can lead to a significant probability of pollution.

All faults occur at one of the following reasons:

• through the valve there are too many exhaust gases;
• it takes too few exhaust gases through it;
• there was a depressurization of the valve body.

The malfunction of the exhaust gas recirculation system can be caused by a breakdown of the following parts:

• external exhaust gas pipes;
• eGR valve;
• thermoclap connecting the source of the vacuum and the USR valve;
• solenoids that are managed with the ECU;
• pressure converters exhaust gases.

EGR valve faults

There are a number of signs that speakers that in the work of the USB valve, problems are observed. The main ones are:

• unstable engine work at idle;
• frequent engine stop;
• skipping ignition;
• car movement by jerks;
• reducing the vacuum on the intake manifold and as a result of the engine operation on the enriched fuel mixture;
• often, with a serious malfunction in the work of the valve recycling valve, the electronic car system flashes the check light bulb.

Diagnosis may occur such error codes as:

• P1403 is a malfunction of the exhaust gas recycling valve;
• Р0400 - error of the recycling system of exhaust gases;
• Р0401 - the ineffectiveness of the exhaust gas recycling system;
• Р0403 - breaking wires inside the control valve of the exhaust gas recirculation system;
• Р0404 - Violation of the functioning of the EGR control valve;
• - Too poor fuel mixture.

How to check the valve of the USR?

When checking must be carried out inspection of the status of the tubes, electrical wires, connectors and other components. If a pneumatic valve is installed on your machine, you can use vacuum pump To bring it into action. For detailed diagnostics, use electronic equipmentwhich will allow you to get an error code. With such an inspection, you need to know the valve technical parameters in order to identify the inconsistency of the received and declared data.

Check is performed in such a sequence:

1. Disconnect vacuum hoses.
2. Throw the device, while the air should not pass through it.
3. Disconnect the connector from the electromagnetic valve.
4. Using wires to supply power to the machine from the battery.
5. Throw the valve, while the air should pass through it.

When the verification showed that the unit is not suitable for further operation, then the purchase and installation of the new, but quite often, they advise just to drown out the USR valve.

How to drown out Valve EGR?

If the operation of the system or the EGR valve, the problems began, the easiest and cheap solution will be prevailing.

Immediately it is worth a reservation that one chip tuning is not enough. That is, turning off the valve control across the ECU does not solve all problems. This step only eliminates the diagnosis of the system as a result of which the computer does not issue an error. However, the valve itself continues to work. Therefore, in addition it is necessary to perform a mechanical exception to its From the engine work.

Some automakers make a special plugs for the valve in the machine. As a rule, it is a thick steel plate (up to 3 mm thick) having a form of hole hole. If you do not have such an original plug, you can make it yourself from the metal of the corresponding thickness.

As a result of the installation of the plug, the temperature in the cylinders increases. And this threatens the risk of cracking of the GBC.

Next, remove the EGR valve. In some car models, you also need to remove the intake manifold. In parallel with this, clean its channels from contaminants. Next, find the gasket, which is installed in the valve fastening site. After that, instead of it, install the above-mentioned metal plug. It can be made with your own hands or buy in the auto shop.

In the process of assembly at the place of the mount, the regular gasket and a new plug are combined. It is necessary to pull the bolt design with bolts, as often factory plugs are fragile. After that, do not forget to turn off vacuum hoses and put the plugs in them. At the end of the process, you must perform the mentioned chip tuning, that is, to make an adjustment to the firmware of the ECU so that the computer does not show an error.

How to drown out echr

Mild Egor

What results will the conjugation of the EGR system?

There are positive and negative sides. The positive refers:

• in the collector does not accumulate Nagar;
• the dynamic characteristics of the car increase;
• no need to change the Valve EGR;
• not so frequent oil change.

Negative sides:

• if the engine has a catalyst, it will be faster;
• the warningler is triggered on the dashboard (check light bulb);
• it is possible to increase fuel consumption;
• increased wear of the valve group (rarely).

Cleaning Valve Erg.

Often, restore the operation of the EGR system can be easily cleaning the device. More often than others are the owners of Opel cars, Chevrolet Lacetti, Nissan, Peugeot.

Resource work various eGR systems It is 70 - 100 thousand km.

For cleaning pneumoclipan Egrr. Necessary from Nagara clean saddle and rod. For cleaning EGR with electroclap control, usually, filter clearedprotecting the vacuum system from pollution.

For cleaning, you will need the following tools: Horn and catch keys, two carburetor cleaners (foam and in the form of spray), cross screwdriver, wrapped pasta for valves.

Cleaning Valve Erg.

After you have found where the ERG valve is, it is necessary to learn the terminals from the battery, as well as the connector from it. Next, using the key, we unscrew the bolts on which the valve is holding, and then get it. The inputs of the device need to be washed for the carburetor.

You need to rinse the channel in the collector using a foam cleaner and tube. The procedure must be performed within 5 ... 10 minutes. And repeat it up to 5 times (depending on the level of pollution). At this time, the wrap-up tumped valve and is ready to disassemble it. To do this, unscrew the bolts and perform disassembly. After that, with the help of triotherapy paste, perform valve wrapper.

When the trigger is completed, it is necessary to wash everything thoroughly, and scale, and the paste. Next, you need to carefully dry and collect. Also necessarily stands for tightness. This is performed using kerosene, which is poured into one compartment. For 5 minutes we are waiting for kerosene to do not flow into another compartment, or on the back of the opposite side. If this happened, then the valve is not hermetically tight. To eliminate the fault, it is necessary to repeat the procedure described above. The system assembly is performed in reverse order.

Egrr valve replacement

In some cases, in particular, when the valve fails, it is necessary to replace it. Naturally, on each car model, this procedure will have its own characteristics due to the structure, but in general terms the algorithm will be approximately the same.

However, immediately before replacement, you need to perform several operations, in particular related to the ECU, the discharge of information so that the electronics "accepted" the new device and did not issue an error. So, you must perform the following steps:

• check the vacuum hoses of the exhaust gas recirculation system;
• check the efficiency of the sensor of the USR and the entire system;
• check the passability of gas recycling highway;
• replace the EGR sensor;
• clear the valve stem from the car;
• remove the fault code into the ECU and test the operation of the new device.

As for directly replacing the mentioned device, we will give an example of its replacement by car Volkswagen Passat B6. The work algorithm will be as follows:

1. Disconnect the valve plane position sensor connector.
2. Loosen the clamps and remove the cooling hoses from the valve fittings.
3. Unscrew the screws (two on each side) on the fastening of metal tubes designed for supplying and removing gases from / to the EGR valve.
4. The valve body is attached to the engine with a bracket using one power bolt and two M8 screws. Accordingly, you need to unscrew them, remove old valve, Install the new and twist screws back.
5. Connect the valve to the ECU system, and then using the software (it can be different) adapt it.

As you can see, the procedure is simple, and as a rule, on all machines, it does not constitute great difficulties. If you seek help for help, then there is a replacement procedure for about 4 ... 5 thousand rubles, regardless of the brand a passenger car. As for the price of the EGR valve directly, it varies within 1500 ... 2000 rubles and even more expensive (depending on the car brand).

Signs of malfunction on diesel

The EGR valve is installed not only on gasoline, but also on diesel engines (including turbocharged). And most interesting in this key It becomes that in the process of operation of the said device, the problems described above for a gasoline engine for a diesel engine are relevant at times stronger. First you need to refer to the distinction of the device on diesel engines. So, here the valve opens at idle, providing about 50% of the clean air in the intake manifold. As the number of revolutions increases, it covers and closes already with a full load on the engine. When the motor works in warm-up mode, the valve is also completely closed.

Problems are primarily associated with the fact that the quality of the domestic diesel fuel, to put it mildly, leaves much to be desired. During the operation of the diesel engine, the EGR valve, an intake manifold, as well as installed in the sensor system, occurs. The consequence of this may be one or more of the following signs of "Disease":

• unstable engine operation (jerking, floating speed at idle);
• loss of dynamic characteristics (poorly accelerated, shows low dynamics even on low gears);
• increase fuel consumption;
• reduction of power;
• the engine will work more "harsh" (after all, the EGR valve in diesels is just needed to mitigate the operation of the motor).

Naturally, the listed phenomena can feature and other faults, but still recommended using computer diagnostics Check the mentioned aggregate. And if necessary, clean, replace or simply drown it.

Another way out is cleaning the intake manifold and the entire corresponding system (including intercooler). Due to poor-quality dielair, the entire system is significantly contaminated with time, so the problems described can be the result of banal pollution, and will disappear after you produce the appropriate cleaning. This procedure is recommended to do no less often than once every two years, but better - more often.